Trunk-lock



E. A .JUDD-. TRUNK LOOK;

(Model.)

Patnted Apr. 29, 188 4.

- INVENTOR.

BY a

N PETERS. Ihato-U MI IM Wuhinnnn. a c.

UNITED STATES PATENT OFFICE.

EDlVABD A. JUDD, OF NEYV BRITAIN, CONNECTICUT.

TRUNK-LOCK.

SPECIFICATION forming part of Letters Patent No. 297,938, dated April29, 1884.

- Application filed November 10, 1883. (Model.)

To all whom, it may concern Be it known that I, EDWARD A. JUDn, of NewBritain, in the county of Hartford and State of Connecticut, haveinvented a new and use ful Improvement in Locks, of which the followingis a full, clear, and exact description.

My invention relates to certain improvements in that class of locks inwhich a stop is used to hold the bolt in its retracted position whenunlocked, and to release the said bolt upon the closing of the lid ofthe article to which the look is attached; and the invention consists inthe construction and arrangement of parts, as will be hereinafter fullydescribed, and specifically set forth in the claims.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicate corresponding parts in all the figures. Y

Figure 1 is a sectional elevation of the lock, keeper, and keeper-plate,showing the parts of the lock in position readyfor locking and thekeeper folded down into the keeper-plate. Fig. 2 is a similar viewshowing the parts in locked position. Fig. 3 is a plan of thekeeper andkeeper-plate, and Fig. 4 is a sectional plan view taken on the line asa; of Fig. 2.

A is thekeeper-plate, formed with the recess a, in which the keeper B ispivoted on pin 1). The keeper B is notched, as shown at c, to re ceivethe nose d of the bolt 0 of theloclgwhich bolt is pivoted in the1ock-box E upon the pin 0, and acted upon by the spring D, which throwsit forward to lock with the keeper B, as shown in Fig. 2, when thekeeper B enters the lock-box and lifts the forward end of thespring-actuated stop F out of engagement with the shoulder f of the boltC. The bolt 0 is. held locked with the keeper B by the springactuatedtumblers Grand stud g, secured to or formed upon one side of the bolt C,the tumblers in this instance being each forced upward by a spring, j,and formed with the T-shaped slot h, in which the stud 9 moves, theshoulders 73 formed in the tumblers by making the T- shaped slotsserving to engage with the stud g, as shown in Fig. 2, for locking thebolt C in its forward or locked position. 7

In order to release the keeper B for unlocking whatever the lock maybeapplied to, the tumblers G .must all be forced downward by a keyplaced upon key-pin 7c,to bring the narrow the Stud 9, thus permittingthe bolt C to be forced backward tothe position shown in Fig. 1; and thetumblers G are made of different width, so that a complicated key isrequired to operate the lock, the shoulders i of the tumblers serving tointercept the backward movement of the bolt C in case the proper form ofkey is not used; and there maybe a greater orless number of the tumblersG, according as to whether the lock is to be very complicated or not.The proper form of key, when placed on key-pin k and turned, will firstdepressthe tumblers G, forcing the shoulders i of all the tumblers justbelow the stud g, and then,on being turned further,will force the bolt 0backward against the action of the spring D to the position shown inFig. 1, sufficient to release the keeper B, in which position the bolt Cwill be held out of contact with the keeper B by the forward end of thestop F dropping in front of the shoulder f of the bolt, permitting thecover or lid, or whatever the lock may be applied to, to be opened.

In order to lock the lid or other article, th

portions h of the T-shaped slotsh in line with stop F must, as aboveintimated, be forced up- I ,ward out of engagement with the shoulder f.

which cannot be done by the key, but only by .the entrance of the keeperB into the opening Z of the lock-box E, so that in order to lockwhatever the lock is applied to it is only necessary to lift the keeperBto the position shown in Fig. 2 and bring the parts together.

Then the lid or cover to a desk, chest, or other object to which thelock is applied is open, the keeper B will be folded down into therecess a of the keeper-plate A, where it will not obstruct the surfaceinto which the keeper-plate A is mortised.

In order to facilitate the opening out of the keeper B for looking, Iform the keeper-plate A with the thumb-cavity m, and for holding thekeeper Bin upright position I provide the keeper-plate A with the springa, the free end of which acts upon the lower end of the keeper, as shownin Fig. 2, and for preventing the bolt C from being forced forward toofar by spring D when the stop F is raised above the shoulder f, I formupon the under side of the stop F the projection f, against which theshoulder f is adapted to strike, as shown'in Fig. 2.

Constructed in the manner described, it will be seen that the lock. isvery convenient and cheap, and, besides the advantage gained by thefolding keeper.B of non-obstruction to the part in which the plate 'A ismortised,a similar advantage is gained in the form of the lock proper,as it presents no protruding parts, thus making the lock especiallyadapted for rolltop desks, pianos, and similar things, and also forfolding doors, and for usefin other places where protruding parts of alock are objectionable.

I am aware that it is not new to provide a trunk-fastener with avertiealspring-operated latch to engage the keeper, said latch being providedwith a shoulder, against which the end of a pivoted lever abuts to holdthe latch back until the keeper causes it to release the latch,saidkeeper extending outside of the easing to form a handle foroperating it to force the latch out of contact with the keeper.

Having thus fully described myinvention, I claim as new and desire tosecure by Letters Patent 1. The combination of the vertical springbolt0, pivoted within the case, and formed with the shoulder f at its lowerend, and 0011- structed to be operated by a key at its upper end, withthe horizontal spring-operated stop Rentirely within the case andextending across the path of the keeper and resting at its free end onthelower part of bolt 0, and asuitable keeper, whereby when the bolt 0is retracted the stop will automatically engage the shoulder f and holdthe bolt retracted, and release the bolt upon the entrance of thekeeper, substantially as set forth.

2. The bolt 0, formed with stud g and acted upon by spring D, incombination with slotted and spring-actuated tumblers Gr, stop F,located within the case, and pivoted keeper 1), all arranged to operatesubstantially as described.

3. The pivoted and folding keeper, in combination with the lock proper,having the spring-operated bolt 0 and stop F, arranged for releasing thebolt upon the entrance of the keeper into the lock, substantially as setforth.

4. The combination, in a lock, of thenotched and pivoted keeper B withthe spring-actuated bolt 0, havingnose d and shoulder f, and thespring-actuated keeper F, having projection f substantially asdescribed, and for the purpose set forth.

EDWARD A. JUDD/ \Vitnesses:

FRANK J. Juno, \VILLI.\.\[ B. PICKUP.

